I need help on the engine spec. While I look at the OS engine manual, one of the spec says "2.9bhp/15000rpm." How do I have to use that information? Does it mean that I have to rev my engine at 15000rpm to get a best performance or it means something else? Also, one of my heli buddy keep telling me that you have to put your engine on a powerband. But if there exist a powerband for a engine, then how do I get that information? The OS engine manual never mentioned power band.

Kev